<template>
  <div class="app-container">
    <!-- <el-form label-width="120px" :rules="rules" class="demo-ruleForm"> -->
    <el-form label-width="120px">
      <el-form-item label="讲师名称" prop="name">
        <el-input v-model="teacher.name"/>
      </el-form-item>
      <el-form-item label="讲师排序">
        <el-input-number v-model="teacher.sort" controls-position="right"
        :min="0"/>
      </el-form-item>
      <el-form-item label="讲师头衔">
        <el-select v-model="teacher.level" clearable placeholder="请选择">
      <!--
      数据类型一定要和取出的json中的一致，否则没法回填
      因此，这里value使用动态绑定的值，保证其数据类型是number
      -->
          <el-option :value="1" label="高级讲师"/>
          <el-option :value="2" label="首席讲师"/>
        </el-select>
      </el-form-item>
      <el-form-item label="讲师资历">
        <el-input v-model="teacher.career"/>
      </el-form-item>
      <el-form-item label="讲师简介">
        <el-input v-model="teacher.intro" :rows="10" type="textarea"/>
      </el-form-item>
      <!-- 讲师头像：TODO -->
      <!-- 讲师头像 -->
      <el-form-item label="讲师头像">
      <!-- 头衔缩略图 -->
        <pan-thumb :image="teacher.avatar ? teacher.avatar : 'https://wpimg.wallstcn.com/f778738c-e4f8-4870-b634-56703b4acafe.gif'"/>
        <!-- 文件上传按钮 -->
        <el-button type="primary" icon="el-icon-upload"
          @click="imagecropperShow=true">更换头像
        </el-button>
        <!--
        v-show：是否显示上传组件
        :key：类似于id，如果一个页面多个图片上传控件，可以做区分
        :url：后台上传的url地址
        @close：关闭上传组件
        @crop-upload-success：上传成功后的回调 -->
        <image-cropper
            v-show="imagecropperShow"
            :width="300"
            :height="300"
            :key="imagecropperKey"
            :url="BASE_API+'/eduoss/fileoss'"
            field="file"
            @close="close"
            @crop-upload-success="cropSuccess"/>
      </el-form-item>

      <el-form-item>
        <el-button :disabled="saveBtnDisabled" type="primary"
        @click="saveOrUpdate">保存</el-button>
      </el-form-item>
    </el-form>
  </div>
</template>

<script>
import teacher from '@/api/edu/teacher.js'
import PanThumb from '@/components/PanThumb/index.vue'
import ImageCropper from '@/components/ImageCropper/index.vue'
export default {
  components:{
    PanThumb,
    ImageCropper
  },
  data(){
    return{
      teacher: {
        name: '',
        sort: 0,
        level: 1,
        career: '',
        intro: '',
        avatar: '',
      },
      saveBtnDisabled: false,     //保存按钮是否禁用
      imagecropperShow: false,    //修改头像是否显示
      imagecropperKey: 0,         //上传组件唯一标识
      BASE_API: process.env.BASE_API,//获取dev.env.js里面地址
      // rules: {
      //   name: [
      //     {required: true, message: '请输入姓名', trigger: 'blur' }
      //   ],
      // }
    }
  },
  watch:{ //监听
    $route(to, from){ //路由变化的方式，当路由发生变化，方法就会执行
      this.init();
    }
  },
  created(){
    this.init();
  },
  methods:{
    //页面初始化执行方法
    init(){
      if(this.$route.params && this.$route.params.id){
        const id = this.$route.params.id;
        this.getInfo(id);
      }else{
        this.teacher = {};
      }
    },
    //添加或修改
    saveOrUpdate(){
      //判断是修改还是添加
      //根据teacher里是否有id
      if(!this.teacher.id){
        //添加
        this.saveTeacher();
      }else{
        //修改
        this.updateTeacher();
      }
    },
    //修改讲师的方法
    updateTeacher(){
      //console.log(this.teacher);
      teacher.updateTeacher(this.teacher)
        .then(res => {
          if(res.code === 20000){
            this.$notify({title: '修改讲师成功', type: 'success'});
            this.$router.push({path: '/teacher/table'});
          }
        })
        .catch(err => {
          console.log(err);
        });
    },
    //添加讲师的方法
    saveTeacher(){
      teacher.addTeacher(this.teacher)
        .then(res => {
          if(res.code === 20000){
            this.$notify({title: '添加讲师成功', type: 'success'});
            this.$router.push({path: '/teacher/table'});
          }
        })
        .catch(err => {
          console.log(err);
        });
    },
    //根据讲师id查询
    getInfo(id){
      teacher.getTeacherInfo(id)
        .then(res => {
          this.teacher = res.data.teacher;
        }).catch(err => {
          console.log(err);
        })
    },
    //关闭上传弹窗的方法
    close(){
      this.imagecropperShow = false;
      //上传组件初始化
      
      this.imagecropperKey += 1;
    },
    //上传成功的方法
    cropSuccess(data){
      //上传之后接口返回图片地址
      console.log(data.url);
      this.teacher.avatar = data.url;
    }
  }
}
</script>

<style>
</style>
